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Shanghai Haozhuang Instrument Co., Ltd. develops the Hao Zhuang (LNB) brand biological safety cabinet, which is energy-saving and environmentally friendly, leading the country. Professional manufacturing is more secure and affordable
Biological safety cabinets are generally used as pathogenic bacteria, mold and yeast. The operating area is negative pressure, which is simply drawn to the wind. Of course, the pathogenic bacteria are not directly drawn out and discharged to the outside. They are filtered on the top of the biological safety cabinet. The leaker can be divided into 50% external discharge type, 75% and 100% external discharge type in terms of exhaust air volume. The ultra-clean bench is a general bacterial operation experiment that has no direct harm to the human body. The positive pressure air supply, the wind blowing on the sample and the laboratory personnel are filtered by the filter, and reach the local level of 100. The ultra-clean table is equivalent to a reduced sterile room (sterile space). The detailed description is as follows: The difference between the biological safety cabinet and the ultra-clean workbench is as follows: The biological safety cabinet is used to operate the primary culture, bacterial strains and diagnosis It is designed to protect the operator, the laboratory environment and the experimental materials from sexual specimens and other infectious experimental materials, so as to avoid exposure to infectious aerosols and spills that may be generated during the above operations. The Laboratory Biosafety Manual suggests that biosafety cabinets can effectively reduce laboratory infections and cross-contamination of cultures caused by aerosol exposure. The biological safety cabinet can also protect the working environment. In fact, biosafety cabinets are more focused on protecting operators and the environment, preventing the spread of pathogenic microorganisms that cause injury and environmental pollution. According to the difference in the level of biological safety protection, biological safety cabinets can be divided into three types: first, second and third level. The first-level biological safety cabinet can protect the staff and the environment without protecting the samples. The principle of airflow is basically the same as that of a laboratory fume hood. The difference is that a HEPA filter is installed at the exhaust port to filter the external exhaust gas flow to prevent pollution caused by the spread of microbial aerosols. The first-level biological safety cabinet itself does not have a fan, and relies on the fan in the external ventilation pipe to drive the airflow. Because it cannot protect the products in the cabinet, it has been rarely used at present. The secondary biological safety cabinet is currently the most widely used cabinet type. According to the regulations in the "Pharmaceutical Industry Standard of the People's Republic of China YY0569-2005 Biosafety Cabinet", the secondary biosafety cabinet can be divided into 4 levels according to the inlet air velocity, exhaust mode and circulation mode: A1 type, A2 type, B1 type And type B2. All secondary biological safety cabinets can provide protection for staff, environment and products. The advantages of the ultra-clean workbench are easy to operate, more comfortable, high working efficiency, short preparation time, basically can be used at any time. This is a general-purpose local purification equipment for single-person operation. The form of airflow is vertical laminar flow and horizontal laminar flow. It can create local high-clean air environment. Special equipment. In factory production, the vaccination workload is very large, and when it is necessary to work for a long time, the ultra-clean table is an ideal equipment. The ultra-clean table is powered by a three-phase motor with a power of about 145 to 260W. The air is blown out through a "super filter" composed of special microporous foam plastic sheets laminated to form a continuous dust-free The ultra-clean laminar flow of bacteria, so-called "efficient special air", removes dust, fungi, bacterial spores, etc. larger than 0.3 μm. The flow rate of ultra-clean air is 24 ～ 30m / min, which is enough to prevent the pollution caused by the possible disturbance of nearby air. Such a flow rate will not prevent the use of alcohol lamps or Bunsen burners to burn and disinfect instruments. The staff operates under such sterile conditions to keep the sterile materials free from contamination during the transfer inoculation process. However, in the event of a power outage in the middle of the operation, materials exposed to unfiltered air will not be spared pollution. At this time, the work should be ended quickly, and a mark should be made on the bottle. If the material in it is in the multiplication stage, it will not be used for multiplication and transferred to rooting culture in the future. If it is a general production material, it can be discarded because it is extremely abundant. If it is in the rooting process, it can be reserved for future planting.
Shanghai Haozhuang Instrument Co., Ltd. is a professional manufacturer of ultra-clean workbench biosafety cabinets, providing ultra-clean workbench clean workbenches and biological safety for medical and health care, pharmaceutical preparations, purification engineering and other fields and laboratories. Cabinet, for more information, please consult Shanghai Haozhuang Instrument Co., Ltd., and look forward to your inquiry!
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